Combination pocket and desk set fountain pen



L. J. MOST Se t. 8, 1931 COMBINATION POCKET AND DESK SET FOUNTAIN PENFiled Sept. 20,1930

Patented Sept. 8, 1931 UNITED STATES PATENT OFFICE LUCIFER J. MOST, OFHUDSON COUNTY, NEW JERSEY, ASSIG-NOR T MABIE TODD & (10., OF NEW YORK,N. Y.

COMBINATION POCKET AND DESK SET FOUNTAIN PEN Application filed September20, 1930. Serial No. 483,204.

My invention relates to means for coupling a tapered extension to afountain pen barrel without any detachable means, to render the couplingjoint unobtrusive on the fountain 6 pen barrel, when from the same thetapered part is disconnected. V

In the appended drawings, forming part of this application,

Figure 1 is a fragmentary elevation of a 0 fountain pen for a desk setin which the coupling joint between the tapered extension and thefountain pen barrel is shown in section to illustrate the relativeposition of its parts, and V Figure 2 is a fragmentary elevation of afountain pen barrel, and the fountain pen cap thereon also showing insection that part of the barrel and cap where the coupling joint isprovided in the barrel. v Referring to the drawings, 5 is the taperedsection which has a threaded stud 6 for which the normally closed end ofthe fountain pen barrel 7 has a threaded socketS.

By means of said stud 6 and socket 8, the fountain pen barrel 7 may becoupled to'the tapered part 5 to form therewith a fountain pen for adesk set.

When the fountain pen barrel 7 is to be used as a pocket fountain pen,it is desirable to obliterate or render unobtrusive the end opening ofthe socket 8. For this purpose generally a detachable part is providedwhich may be mislaid. To remove this objectional feature, I close thesocket opening by means of a spring actuating plunger 9, which fitsclosely into socket 8. The plunger 9 is provided with a head 10 forwhich a proper recess 11 is provided within the barrel. 7. This recess11 is closed by a disk 12, fitting into the bore 13 of the barrel 7,wherein the sack 14 is located.

Between the disk 12 and the head 10 of the plunger, 2. spring 15 ispositioned to normally move the plunger so that its end, remote from thehead 10, comes flush with the end of the barrel. This is obtained byproperly locating the head 10 on the plunger 9. The end of the plunger 9may be provided with a tip 16, which either matches the color of thebarrel end or decorates it in obliterating or hiding the socket opening.

When the tapered section 5 is unscrewed from the socket 8 of the barrel7, the spring 15 moves the plunger to the position in Figure 2, andtherefore hides the opening formed by the socket, by means of which thetapered section 5 is coupled to the barrel 7 when the pen is to be usedas a desk set pen. This construction obviates the necessity of using adetachable part which may be mislaid or lost 1n the constant interchangebetween the pock- ,et pen and a desk set pen, and adds to the finish ofthe article by decorating the end I of the pen when exposed.

I claim:

1. In a combination pocket and desk set fountain pen, a fountain penbarrel having me ans for coupling a section thereto, and means 8. In acombination pocket and desk set fountain pen, a fountain pen barrelhaving a socket at the normally closed end thereof,

for receiving a stud of a removable section,

and means associated with the barrel, for entering or receding from saidsocket, accordingly whether the section is connected or disconnectedfrom the barrel.

4. In a combination pocket and desk set fountain pen, a fountain penbarrel having a socket at the normally closed end thereof, s

for engaging a stud of a removable section and, a spring actuatedplunger located in the barrel, and normally tending to enter the socketto fill the same.

5. In a combination pocket and desk set.

fountain pen, a barrel having means for coupling and uncouplingtherefrom of a removable section, and spring actuated means carriedbythebarrel for hiding the point at which the removable section is coupled tothe barrel.

6. In a combination pocket and desk set fountain pen, a barrel having athreaded socket in the normally closed end of the fountain pen barrelfor engaging a threaded stud of a removable section, and a springactuated plunger in the barrel for slidably engaging the threaded socketto be flush with the end of the barrel.

7. In a combination pocket and desk set fountain pen, a barrel having asocket at the normally closed end thereof for engaging a stud of aremovable section of the fountain pen, a plunger mounted to reciprocatein said socket, a spring normally tending to maintain the plunger in thesocket, and means on said plunger for limiting the motion thereof intothe socket by the action of the sprinm b LUGIFER J. MOST.

